//// protos.cpp -- using prototypes and function calls
//#include <iostream>
//void cheers(int);			//prototype: no return value
//double cube(double x);		//prototype: returns a double
//int main()
//{
//	using namespace std;
//	cheers(5);				//function call
//	cout << "Give me a number: ";
//	double side;
//	cin >> side;
//	double volume = cube(side);		//function call
//	cout << "A " << side << "-foot cube has a volume of ";
//	cout << volume << " cubic feet.\n";
//	cheers(cube(2));		//prototype protection at work
//	return 0;
//}
//
//void cherrs(int n)
//{
//	using namespace std;
//	for (int i = 0; i < n; i++)
//	{
//		cout << "Cherrs! ";
//		cout << endl;
//	}
//}
//
//double cube(double x)
//{
//	return x * x * x;
//}